114 citations · 196 across the 7 of their papers we have counts for
7 papers
Resonant and Ultra-short-period Planet Systems are at Opposite Ends of the Exoplanet Age Distribution
Stephen P. Schmidt, Kevin C. Schlaufman, Jacob H. Hamer
Exoplanet systems are thought to evolve on secular timescales over billions of years. This evolution is impossible to directly observe on human timescales in most individual system…
Kepler-discovered Multiple-planet Systems Near Period Ratios Suggestive of Mean-motion Resonances Are Young
Jacob H. Hamer, Kevin C. Schlaufman
Before the launch of the Kepler Space Telescope, models of low-mass planet formation predicted that convergent Type I migration would often produce systems of low-mass planets in l…
Evidence for the Late Arrival of Hot Jupiters in Systems with High Host-star Obliquities
Jacob H. Hamer, Kevin C. Schlaufman
It has been shown that hot Jupiters systems with massive, hot stellar primaries exhibit a wide range of stellar obliquities. On the other hand, hot Jupiter systems with low-mass, c…
Coadded Spectroscopic Stellar Parameters and Abundances from the LAMOST Low Resolution Survey
Jacob H. Hamer
I combine duplicate spectroscopic stellar parameter estimates in the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Data Release 6 Low Resolution Spectral Surve…
Ultra-short-period Planets are Stable Against Tidal Inspiral
Jacob H. Hamer, Kevin C. Schlaufman
It has been unambiguously shown in both individual systems and at the population level that hot Jupiters experience tidal inspiral before the end of their host stars' main sequence…
Very wide companion fraction from Gaia DR2: a weak or no enhancement for hot jupiter hosts, and a strong enhancement for contact binaries
Hsiang-Chih Hwang, Jacob H. Hamer, Nadia L. Zakamska +1
There is an ongoing debate on whether hot jupiter hosts are more likely to be found in wide binaries with separations of AU. In this paper, we search for comoving, ve…
Hot Jupiters are Destroyed by Tides While Their Host Stars are on the Main Sequence
Jacob H. Hamer, Kevin C. Schlaufman
While cooler giant planets are often observed with non-zero eccentricities, the short-period circular orbits of hot Jupiters suggest that they lose orbital energy and angular momen…